CN112822612A

CN112822612A - Piezoelectric ceramic loudspeaker sound transmission device

Info

Publication number: CN112822612A
Application number: CN201911119260.XA
Authority: CN
Inventors: 王润宇
Original assignee: Wuxi Hengcheng Medical Technology Co ltd
Current assignee: Wuxi Hengcheng Medical Technology Co ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2021-05-18

Abstract

The invention relates to a piezoelectric ceramic horn sound transmission device which comprises a ceramic sounder, wherein one end of the ceramic sounder is connected with an audio tuner through a connecting pipe; the ceramic sounder is structurally characterized in that: including protecgulum and hou gai, form sealed cavity after protecgulum and the butt joint of hou gai be equipped with the laminating vibration board in the sealed cavity, be equipped with piezoceramics loudspeaker unit on it, after cover install with piezoceramics loudspeaker unit electric connection's the signal of telecommunication input. The invention has compact and reasonable structure and convenient operation, converts the electrical signal into mechanical energy by utilizing the excellent performance of the piezoelectric ceramic, attaches the piezoelectric ceramic piece on the film-shaped sounding vibrating plate, deforms under the action of force and generates larger fluctuation amplitude; the loss is low in the transmission process, and the anti-interference capability is strong.

Description

Piezoelectric ceramic loudspeaker sound transmission device

Technical Field

The invention relates to the technical field of piezoelectric ceramic horns, in particular to a piezoelectric ceramic horn sound transmission device formed by a piezoelectric ceramic horn and an air conduit.

Background

Most of active sounding devices are system devices with electronic circuits and power supply equipment, which are composed of different materials and a large number of metal structures, and in special occasions, such as environments with high electric fields and high magnetic fields, a large number of or a small number of sounding devices with metal structures, such as microphones, earphones and other sound-conducting devices, can generate mutual interference and even generate shielding in the environments with high electric fields and high magnetic fields, so that sound cannot be heard in the special occasions or special device spaces to influence normal communication.

The piezoelectric ceramic horn technology can generate sound effect in a closed structure cavity, and the traditional horn is large in volume, not strong in instantaneous dynamic, and has a large cavity, and a good effect cannot be generated in a closed structure. However, in the conventional piezoelectric ceramic horn sound transmission equipment, metal materials and charged signals such as micro-voltage and micro-current exist, and the functions are affected because the normal actions cannot be performed due to mutual interference.

Disclosure of Invention

The applicant aims at the defects in the prior art and provides a piezoelectric ceramic horn sound transmission device with a reasonable structure, so that the interference resistance in a high-electric field and high-magnetic field environment is improved.

The technical scheme adopted by the invention is as follows:

a piezoelectric ceramic horn sound transmission device comprises a ceramic sounder, wherein one end of the ceramic sounder is connected with an audio tuner through a connecting pipe; the ceramic sounder is structurally characterized in that: including protecgulum and hou gai, form sealed cavity after protecgulum and the butt joint of hou gai be equipped with the laminating vibration board in the sealed cavity, be equipped with piezoceramics loudspeaker unit on it, after cover install with piezoceramics loudspeaker unit electric connection's the signal of telecommunication input.

As a further improvement of the above technical solution:

the bonding vibration plate is in a film form and has the following structure: the piezoelectric ceramic loudspeaker comprises a fixed support, a piezoelectric ceramic loudspeaker unit and a piezoelectric ceramic loudspeaker unit, wherein the fixed support comprises an outer ring, a first sound vibrating plate with a hollow middle part is arranged in the fixed support, a hole is formed in the first sound vibrating plate, and the piezoelectric ceramic loudspeaker unit is arranged in the hole through a reinforcing support; the piezoelectric ceramic horn unit comprises a pitch expanding sound tube and a second sound vibration plate which are arranged adjacently, the front surface and the rear surface of the second sound vibration plate are respectively connected with piezoelectric ceramic pieces through signal lines, and the two piezoelectric ceramic pieces are connected in parallel on a circuit; the pitch-expanding sound tube is in a cap shape, and the middle part of the pitch-expanding sound tube is attached to the central part of the piezoelectric ceramic piece.

The electric signal input end comprises a signal input PCB board, and a signal matching resistor is arranged on the signal input PCB board.

The structure of the audio tuner is as follows: the air faucet fixing structure comprises a cavity, wherein two ends of the cavity form a closed structure through air faucet fixing covers respectively; the cavity is internally provided with an audio frequency splitter, the audio frequency splitter is in a hollow tubular shape, the two end faces of the audio frequency splitter are provided with concave arc-shaped grid plates, a plurality of through holes are formed in the grid plates, and the two ends of the audio frequency splitter are respectively provided with a tuning screen.

The air faucet fixing cover comprises a cover body, and a tubular connecting faucet connected with the other end of the connecting pipe is arranged on the cover body.

The tuning screen is made of a PC material, and a plurality of small holes are uniformly distributed in the tuning screen.

A conical groove is formed in the front cover, and a connecting hole connected with one end of the connecting pipe is formed in the middle of the bottom surface of the conical groove.

The connecting pipe is a PVC, PU or PEI pipe.

The front cover, the attaching vibration plate and the rear cover are connected into a whole through bolts, and sealing gaskets are respectively arranged between the attaching vibration plate and the front cover as well as between the attaching vibration plate and the rear cover.

The invention has the following beneficial effects:

the invention has compact and reasonable structure and convenient operation, converts the electrical signal into mechanical energy by utilizing the excellent performance of the piezoelectric ceramic, attaches the piezoelectric ceramic piece on the film-shaped sounding vibrating plate, deforms under the action of force and generates larger fluctuation amplitude; the loss is low in the transmission process, and the anti-interference capability is strong.

Borrow by the undulant strength that the electric energy production of variation in size changed, promote through compressed air, utilize the connecting pipe to conduct, the connecting pipe adopts non-metallic material, and anti-interference effect is good, is applicable to and works in high magnetic field and high electric field, is one kind to have concurrently energy-concerving and environment-protective, the volume is slim and graceful, the piezoceramics loudspeaker transaudient device that dynamic nature is strong.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is an exploded view of the ceramic sounder of the present invention.

Fig. 3 is an exploded view of an audio tuner of the present invention.

Fig. 4 is an exploded view of the piezoelectric ceramic horn unit of the present invention.

Fig. 5 is an exploded view of the electrical signal input terminal of the present invention.

In the figure: 1. a ceramic sounder; 2. a connecting pipe; 3. an audio tuner; 4. a rear cover; 5. a piezoelectric ceramic horn unit; 6. a sealing gasket; 7. a front cover; 8. an electrical signal input; 9. an audio splitter; 10. a cavity; 11. a tuning screen; 12. an air tap fixing cover; 13. attaching a vibrating plate; 51. a sound tube for expanding sound; 52. a second sound vibration plate; 53. piezoelectric ceramic plates; 131. fixing a bracket; 132. a first sound vibration plate; 133. a reinforcing bracket; 701. a tapered groove; 702. connecting holes; 81. inputting a signal into the PCB; 82. a signal matching resistor; 901. a grid plate; 902. a through hole; 121. a cover body; 122. a connecting mouth.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 and fig. 2, the sound transmission device of the piezoelectric ceramic horn of the present embodiment includes a ceramic sound generator 1, wherein one end of the ceramic sound generator 1 is connected to an audio tuner 3 through a connecting pipe 2; the ceramic acoustic generator 1 has the following structure: including protecgulum 7 and hou gai 4, form sealed cavity after protecgulum 7 and the butt joint of hou gai 4, be equipped with laminating vibration board 13 in sealed cavity, be equipped with piezoceramics loudspeaker unit 5 on it, install on the back lid 4 with piezoceramics loudspeaker unit 5 electric connection's signal of telecommunication input 8.

As shown in fig. 4, the bonded diaphragm 13 is in the form of a film and has a structure including: the piezoelectric ceramic loudspeaker comprises a fixed support 131 comprising an outer ring, wherein a first sounding vibration plate 132 with a hollow middle part is arranged in the fixed support 131, a hole is formed in the first sounding vibration plate 132, and a piezoelectric ceramic loudspeaker unit 5 is arranged in the hole through a reinforcing support 133; the piezoelectric ceramic horn unit 5 comprises a pitch expanding sound tube 51 and a second sound vibration plate 52 which are adjacently arranged, the front surface and the rear surface of the second sound vibration plate 52 are respectively connected with piezoelectric ceramic pieces 53 through signal lines, and the two piezoelectric ceramic pieces 53 are connected in parallel on a circuit; the pitch amplification sound cylinder 51 is hat-shaped, and the middle part thereof is a plane.

As shown in fig. 5, the electrical signal input terminal 8 includes a signal input PCB board 81 on which a signal matching resistor 82 is disposed.

As shown in fig. 3, the audio tuner 3 has a structure in which: comprises a cavity 10, wherein two ends of the cavity 10 form a closed structure through an air nozzle fixing cover 12 respectively; the cavity 10 is internally provided with an audio frequency splitter 9, the audio frequency splitter 9 is in a hollow tubular shape, two end faces of the audio frequency splitter 9 are provided with concave arc-shaped grid plates 901, the grid plates 901 are provided with a plurality of through holes 902, and two ends of the audio frequency splitter 9 are respectively provided with a tuning screen 11.

The air faucet fixing cover 12 includes a cover body 121, and a tubular connection nozzle 122 connected to the other end of the connection pipe 2 is provided on the cover body 121.

The tuning screen 11 is made of PC material, and a plurality of small holes are uniformly distributed on the tuning screen 11.

A tapered groove 701 is formed in the front cover 7, and a connection hole 702 connected to one end of the connection pipe 2 is formed in the middle of the bottom surface of the tapered groove 701.

The connecting pipe 2 is a PVC, PU or PEI pipe.

The front cover 7, the joint vibration plate 13 and the rear cover 4 are connected into a whole by bolts, and sealing gaskets 6 are respectively arranged between the joint vibration plate 13 and the front cover 7 and the rear cover 4.

The design principle of the invention is as follows:

the ceramic sounder 1 is a sounding part of the invention, which inputs the frequency of the sounder (such as music signal, MIC human voice signal) to the piezoelectric ceramic horn unit 5 through the amplifier, the piezoelectric ceramic horn unit 5 is a sounding part, the part uses the electric signal to generate the effect of large and small amplitude, generates air compression in the sealed chamber of the front cover and the back cover, sends out the audio frequency, and transmits the air through the connecting pipe 2 to the audio tuner 3.

In the implementation process of the invention, the piezoelectric ceramic horn unit 5 is a sound producing component of the technical scheme, two piezoelectric ceramic sheets 53 are connected in parallel on a circuit, an electric signal is supplied to the piezoelectric ceramic horn unit 5 through an electric signal input end 8 to generate a large and small amplitude effect of horizontal movement, so that a high-frequency audio frequency is generated, a high-frequency amplified signal is pushed out to the audio tuner 3 through a sealing chamber formed by the front cover 7 and the rear cover 4 and the connecting pipe 2, the audio signal is rectified through the tuning screen 11 of the audio tuner 3 and split through the through hole 902 on the grid plate 901 of the audio splitter 9, the loss of the audio frequency in transmission is reduced, and the problems of low-frequency echo and low-frequency resonance are solved.

The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.

Claims

1. The utility model provides a piezoceramics loudspeaker sound transmission device which characterized in that: the audio frequency tuner comprises a ceramic sounder (1), wherein one end of the ceramic sounder (1) is connected with an audio frequency tuner (3) through a connecting pipe (2);

the ceramic sounder (1) is structurally characterized in that: the piezoelectric ceramic loudspeaker comprises a front cover (7) and a rear cover (4), wherein the front cover (7) and the rear cover (4) are butted to form a sealed cavity, a joint vibration plate (13) is arranged in the sealed cavity, and a piezoelectric ceramic loudspeaker unit (5) is arranged on the joint vibration plate; and an electrical signal input end (8) electrically connected with the piezoelectric ceramic horn unit (5) is arranged on the rear cover (4).

2. The piezoceramic horn acoustic device of claim 1, wherein: the bonding vibration plate (13) is in a film shape and has the following structure: the piezoelectric ceramic loudspeaker comprises a fixed support (131) comprising an outer ring, wherein a first sound vibration plate (132) is installed in the fixed support, a hole is formed in the first sound vibration plate (132), and the piezoelectric ceramic loudspeaker unit (5) is installed in the hole through a reinforcing support (133);

the piezoelectric ceramic horn unit (5) comprises a pitch expanding sound tube (51) and a second sound vibration plate (52) which are arranged in parallel and are adjacent, the front surface and the rear surface of the second sound vibration plate (52) are respectively connected with piezoelectric ceramic pieces (53) through signal lines, and the two piezoelectric ceramic pieces (53) are connected in parallel on a circuit; the pitch-expanding sound tube (51) is in a cap shape, and the middle part of the pitch-expanding sound tube is attached to the central part of the 53 piezoelectric ceramic plate.

3. The piezoceramic horn acoustic device of claim 1, wherein: the electrical signal input end (8) comprises a signal input PCB (81) on which a signal matching resistor (82) is arranged.

4. The piezoceramic horn acoustic device of claim 1, wherein: the audio tuner (3) is structurally characterized in that: comprises a cavity (10), wherein two ends of the cavity (10) form a closed structure through an air nozzle fixing cover (12); an audio frequency splitter (9) is arranged in the cavity (10), the audio frequency splitter (9) is in a hollow tubular shape, two end faces of the audio frequency splitter are respectively provided with an inwards concave arc-shaped grid plate (901), the grid plate (901) is provided with a plurality of through holes (902), and two ends of the audio frequency splitter (9) are respectively provided with a tuning screen (11).

5. The piezoceramic horn acoustic device of claim 4, wherein: the air faucet fixing cover (12) comprises a cover body (121), and a tubular connecting faucet (122) connected with the other end of the connecting pipe (2) is arranged on the cover body (121).

6. The piezoceramic horn acoustic device of claim 4, wherein: the tuning screen (11) is made of a PC material, and a plurality of small holes are uniformly distributed in the tuning screen (11).

7. The piezoceramic horn acoustic device of claim 1, wherein: a tapered groove (701) is formed in the front cover (7), and a connecting hole (702) connected with one end of the connecting pipe (2) is formed in the middle of the bottom surface of the tapered groove (701).

8. The piezoceramic horn acoustic device of any one of claims 1 to 7, wherein: the connecting pipe (2) is a PVC, PU or PEI pipe.

9. The piezoceramic horn acoustic device of claim 8, wherein: the front cover (7), the joint vibration plate (13) and the rear cover (4) are connected into a whole through bolts, and sealing gaskets (6) are respectively arranged between the joint vibration plate (13) and the front cover (7) and between the joint vibration plate and the rear cover (4).